vendor: import KillerPDF 1.7.5 source (GPL-3.0) as the base for MMD PDF

2026-08-27 06:58:22 +02:00
commit 532485a830
577 changed files with 149058 additions and 0 deletions
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+using KillerPDF.Services;
+using Xunit;
+
+namespace KillerPDF.Tests;
+
+public sealed class TextRunServiceTests
+{
+    [Theory]
+    [InlineData("English text", false)]
+    [InlineData("متن فارسی", true)]
+    [InlineData("نص عربي", true)]
+    [InlineData("טקסט עברי", true)]
+    [InlineData("1234", false)]
+    public void DetectsLineDirection(string text, bool expected)
+        => Assert.Equal(expected, TextRunService.IsRightToLeftText(new[] { text }));
+
+    [Fact]
+    public void RightToLeftCaretMovesFromRightEdgeToLeftEdge()
+    {
+        var runs = new PageTextRuns();
+        runs.Chars.Add(new RunChar("א", 90, 100, 0, 0));
+        runs.Chars.Add(new RunChar("ב", 80, 90, 0, 0));
+        runs.Chars.Add(new RunChar("ג", 70, 80, 0, 0));
+        runs.Lines.Add(new RunLine
+        {
+            Start = 0,
+            Count = 3,
+            Top = 20,
+            Bottom = 10,
+            Left = 70,
+            Right = 100,
+            RightToLeft = true,
+        });
+
+        Assert.Equal(0, TextRunService.CaretFromPoint(runs, 101, 15));
+        Assert.Equal(1, TextRunService.CaretFromPoint(runs, 89, 15));
+        Assert.Equal(3, TextRunService.CaretFromPoint(runs, 69, 15));
+    }
+}